Mastra 发布 Span 查询 API 与 Trace 成本聚合更新
原标题：October 7, 2026
AI 摘要
Mastra 发布 2026 年 10 月 7 日更新，核心新增 Span Query API，可按过滤、游标、预览和模型成本查询单个已完成 span，无需先定位 trace。Trace 聚合新增 token 与成本指标，并在 ClickHouse、DuckDB、Postgres 存储中实现。语义召回支持自嵌入向量存储，无需客户端 embedder；@mastra/connect 1.0 稳定版新增 Teams 渠道、Discord 凭证安全与可观测性。此外包含多项破坏性变更，如 MCP 工具默认不再需要审批、API 重命名等。
正文节选
## Highlights ### Span Query API (list completed spans across traces) New core/server/client support lets you query individual completed spans (with filters, cursors, previews, and model cost) via `storage.querySpans()` / `client.querySpans()` / `POST /api/observability/spans/query`, enabling workflows like “show every failed tool_call in the last hour” without first finding traces. ### Trace Aggregation with token + cost analytics (now across stores) `aggregateTraces()` now supports tok